PlayStation forum member AZ92 is currently hosting a series of Flash-based browser demos (in Japanese) of Sega's Brain Trainer Portable. The Brain Trainer series, which shares obvious similarities to DS's Brain Age game (it's even supervised by Dr. Kawashima), is actually based on Sega Toys's Nouryoku Trainer, a popular electronic device released in Japan back in October 2004. But never mind the game; it's the concept of a PSP Flash demo of a retail game that's the real innovation. Nice work.
Use this link to play directly from your PSP.
[Via PSP Fanboy]
